Overview
IBM NS1 operates a authoritative dns network identified by AS395403.
The record includes 163.114.198.0/24 as a representative IPv4 prefix. It is not the network’s complete or permanent address space.
Current services include Authoritative DNS, global anycast DNS, traffic steering, monitoring, APIs, and managed DNS infrastructure.
Historical services: Previously cataloged as IBM CDN; IBM's former CDN backend service was discontinued while IBM NS1 Connect remains active.
This record describes an autonomous system or publicly routed Internet network. It does not identify a physical Data Center, prove who operated an individual request, or establish that every address announced by the ASN is used for the same service.
Network prefixes
These are documented prefixes associated with this routed network. They are not necessarily the network’s complete current address space.
- Representative prefix
-
163.114.198.0/24
IPv4 · Active · RPKI Valid · checked 2026-08-07
Provider and network
- Network / Provider Name
- IBM NS1
- Parent Organization
- IBM
- Registered / Operating Organization
- IBM
- ISP / Network Operator
- IBM NS1 Connect
- ASN
-
AS395403 - ASN Name
- NS1-INFRA
- Network Name
- IBM NS1
- Current Services
- Authoritative DNS, global anycast DNS, traffic steering, monitoring, APIs, and managed DNS infrastructure
- Historical Services / Brands
- Previously cataloged as IBM CDN; IBM's former CDN backend service was discontinued while IBM NS1 Connect remains active
- Provider Type
- DNS provider
- Network Type
- Authoritative DNS network
Network scope
- Network Country
- US
Traffic and handling
- Traffic Classification
- Authoritative DNS Network Traffic
- Traffic Label
- Authoritative DNS Network
- Risk Level
- Low
- Recommended Action
- Treat as authoritative DNS and traffic-steering infrastructure. Verify protocol and behavior before taking action.
- Default Rule Action
- Log
- Common Pattern
- Traffic is primarily authoritative DNS, monitoring, traffic steering, API, and supporting service infrastructure.
- Detection Notes
- Match AS395403 and its current prefixes as IBM NS1 authoritative DNS infrastructure. Do not classify the entire ASN as a retired CDN merely because a separate IBM CDN product ended.
Relationships
- Operator
- IBM Evidence Checked 2026-08-07